NOTE: If the swipe image with trackpad not work with Lion just enable (Swipe between pages) in "System Preferences > Trackpad > More Gestures > Swipe between pages" and change it to "Swipe left or right with THREE fingers".

Viewer is the most elegant, powerful, fast and stylish way to browse and convert Images and PDF, it is easy to use and fully compatible with MacBook gesture and MagicMouse.Viewer can play and control animated Images such as gif, jpg, and jpeg.